GD3 refers to a coated secondary fibre board, insert and back grey
(chromo duplex board), top side wood-free white or slightly wood-containing white, with special volume (< 1.3 cm³/g).
V = hf or slightly hh white
E = grey
R = grey
hf white: wood-free white layer of bleached pulp with a maximum of 5% mechanical pulp
slightly hh white = slightly woody white layer of bleached pulp with a maximum of 30% mechanical pulp
grey = layer of recycled pulp (reused cellulose and groundwood fibres)
© 2021 – Proof GmbH
Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.
Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It is mandatory to procure user consent prior to running these cookies on your website.
Recent Comments